Cloning and expression of stearoyl-CoA desaturase 1 (SCD-1) in the liver of the Sichuan white goose and landes goose responding to overfeeding

Mol Biol Rep. 2011 Jun;38(5):3417-25. doi: 10.1007/s11033-010-0451-1. Epub 2010 Nov 19.

Abstract

The EST sequence of goose (Anser cygnoides) Stearoyl-CoA desaturase 1(SCD-1) was obtained from a subtractive cDNA library. To further investigate the role of SCD-1 in lipid metabolism in geese, 5'-RACE and 3'-RACE were carried out in this study to obtain the complete cDNA sequence of goose SCD-1, which contained a 29-bp 5' UTR, a 1074-bp open reading frame (ORF) encoding 357 amino acids, and a 125-bp 3' UTR. The expression of SCD-1 was measured in several tissues, and the effects of overfeeding on the expression of SCD-1 were studied. The results of real time RT-PCR demonstrated that, compared to the brain, goose SCD-1 mRNA was more abundant in the liver. Overfeeding markedly increased the mRNA expression of SCD-1 in the liver of Sichuan White and Landes geese, and gene expression was markedly higher in the Sichuan White goose than in the landes goose. The mRNA abundance of SCD-1 in the liver had significant positive correlations with triacylglycerol (TG) content in liver lipids and in the levels of plasma insulin and very low-density lipoproteins (VLDL) levels in Sichuan white geese. However, the mRNA abundance of SCD-1 in the livers of Landes geese had only significant positive correlations with the TG content in liver lipids. In conclusion, SCD-1 is not only critical for hepatic steatosis in geese but is also important for the difference in lipid deposition in the livers of the two breeds.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Cells, Cultured
  • Cloning, Molecular
  • Eating*
  • Expressed Sequence Tags
  • Fatty Liver / genetics
  • Fatty Liver / metabolism
  • Geese / anatomy & histology
  • Geese / genetics
  • Geese / metabolism*
  • Hepatocytes / cytology
  • Hepatocytes / metabolism
  • Lipid Metabolism / genetics
  • Lipoproteins, VLDL / genetics
  • Lipoproteins, VLDL / metabolism
  • Liver / enzymology*
  • Male
  • Molecular Sequence Data
  • Overnutrition*
  • Phylogeny
  • Sequence Alignment
  • Stearoyl-CoA Desaturase / classification
  • Stearoyl-CoA Desaturase / genetics
  • Stearoyl-CoA Desaturase / metabolism*
  • Triglycerides / genetics
  • Triglycerides / metabolism

Substances

  • Lipoproteins, VLDL
  • Triglycerides
  • Stearoyl-CoA Desaturase